Added projects db
Display the database files in the GUI
Make it possible to add a new project
projectmanagerwindow: Added icon to exit menu, keyboard shortcuts to New and Exit
Added a title to the new project dialog
Bugfix: when screen is larger than the projectlist, didn't scale properly
Added delete button, edit button wip
Fixed a double delete bug... Stupid me.
Cleaned up
Use the functions I wrote, so the widget removes when it's removed...
Ask the user before he deletes a project
Merge branch 'projectmanagement', import new features